exynos/fimg2d: fix empty buffer handling in g2d_flush()

Empty command buffers are no error, we just don't have
anything to do for flushing then.

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

diff --git a/exynos/exynos_fimg2d.c b/exynos/exynos_fimg2d.c
index 24a06d0..4a88e0c 100644 (file)
--- a/exynos/exynos_fimg2d.c
+++ b/exynos/exynos_fimg2d.c
@@ -191,7 +191,7 @@ static int g2d_flush(struct g2d_context *ctx)
        struct drm_exynos_g2d_set_cmdlist cmdlist = {0};
 
        if (ctx->cmd_nr == 0 && ctx->cmd_buf_nr == 0)
-               return -1;
+               return 0;
 
        if (ctx->cmdlist_nr >= G2D_MAX_CMD_LIST_NR) {
                fprintf(stderr, "Overflow cmdlist.\n");